Valve



M. YABLICZK VALVE Filed April 14, 1922 Patent Nos. i8, lQZd.

MAX YABLICK, OF NEWARK, NEW JERSEY.

. VALVE.

Application filed April 14., 1922. Serial No. 552,529.

To aZZ whom it may concern:

Be it lmown that 1, MAX YABLICK, a citizen of the United States, residin at Newark, in'the county of Essex and tate of New Jersey, have invented certain new and useful Improvements in Valves, of which the following is a specification.

This invention relates to one-way valves of flexible material and more specifically to 1 improvements upon the type of valves commonly known as flutter valves which are extensively employed in as masks for the discharge of exhaled air therefrom, al though not necessarily limited to such use. It is customary to provide means in connection with respirators or gas masks to readily permit outflow of the exhaled air.

This means should positively and eifectively close during inhalation to prevent admission of air therethrough, so that the air which is breathed in is taken entirely from the fresh air compartment or through the air purifying means as the case may be.

The flutter valve heretofore employed for this purpose consisted of a bag of soft,

liable rubber, connected at one end with a tting throu h which the air is exhaled, and provide with slits ,at the other end. The walls of the bag were arranged to lie directl one upon the other, and in exhaling, the wa ls separated sufliciently to permit the air to pass therethrough and out through the slits. In inhaling, the natural arrangement of the walls together with the suction caused by inhaling pulled the walls of the tube or bag tightl together and prevented entrance of air therethrough.

One of the disadvantages of this type of valve is that it, does not afiord absolute safety against the entrance of atmospheric air therethrough into the mask when the wearer inhales. Thus, if solid particles, such as sand, grit, etc., become lodged between the walls of the bag,

not close tightly and therefore fail to function roperly. The necessary protection is thus ost.

Another disadvantage of this type of valve is that when placed upon the fitting of the mask through which the exhaled air passes, the valve rejects a considerable distance beyond the ace-piece of the mask, thus greatly interfering with the freedom of movement of the wearer.

. This -disadthe valve will vantage is further accentuated by the fact 5 that these valves of pliable rubber are almost invar ably protected by a surrounding frame of rigid material, such as metal, and th1s r gid frame also projects beyond the face-piece of the mask at even a greater distance than the valve itself.

My improved valveovercomes these disadvantages and when placed upon a gas mask or respirator renders it more compact and more eificient.

Referring to the drawings, Fig. 1 is a perspective view of the preferred form of my device; Fig. 2 is a sectionthrough the centreof the valve, showing the position of the walls of the valve when in closed position; Fig. 3 is a section similar to Fig. 2, showing the position of the walls when air s being exhaled throu h the valve; Fig. 4 1s a perspective view 0 a modified form of valve which operates similarly to the valves shown in Figs. 1 to 3; Fi 5 is a. perspective view of another mo ification of the preferred valve, parts of the device being broken away to illustrate the interior of the valve; Fig. 6 is a section through the centre of the valve shown in Fig. 5; Fig. 7 is a section through the centre of another modification; Fig. 8 is a perspective view ofanother modification. I

My valve comprises the'bag-shaped construction of the ordinary flutter valve having the walls 1 and 2 of flexible or pliable I material, which is usuall molded rubber. The walls are joined at their edges, except at the openings 3| and 4. 'To one of these walls is attached a neck 5 at right angles or other angular relationship, preferably integral therewith and of the same materia 1 and this neck is adapted to be placed over the fitting of the mask through which air is exhaled. The walls 1 and 2 are also preferably integral at the edges 6, 7 and 8,.the smaller edges 9 being cemented at 10. c 7 When exhaled air from the mask enters the valve through the neck 5, the walls 1 and 2 will Separate as shown in Fig. 3, and the air will. pass out through the openings or slits3 and 4. On inhalation, suction occurs at the neck 5 of the' valve and the walls 1 and 2 will close together as shown 195 in Fig. 2. The base 11 of t e neck 5 forms aseat against which the wall 2 is drawn, thus closing the'valve against incoming air.

Ordinarily, when the wearer of a mask equipped with this valve inhales, the base 11 and wall 2 constitutes the valve closing mechanism, but if forany should fail fectly, an additional protection is provided by the extended walls 1 an 2, since any suction at the base 11 will cause the walls 1 and 2 to come together at the slits as in the ordinary flutter valve. It is therefore clear that my device provides additional protection to that afforded by the ordinary flutter valve.

In Fig. 4, the neck 5 of the valve is positioned at one end of the walls of the valve, while in the type shown in the other views the neck is located so as to provide prorigid protecting frame is used jeoting portions in all directions.

When still furthenprotection is desired provide a thin sheet 12 of flexible material which is attached at spaced points to the base 11 of the neck 5, as shown in Fig. 5. On exhalation, this sheet 12 will separate from the base 11 and allow the exhaled air to pass between the walls 1 and 2. On inhalation, the sheet 12 will be drawn to the base 11 and prevent the entrance of air into the neck 5 of the valve. It is to be understood that should there be imperfection in nism' of the sheet 12 and base 11, valve-closing mechanisms in my device, heretofore described, would function to efl'ect proper valve closure.

In usin my device the neck 5 is placed over the I tting of themask through which the exhaled air passes. The walls 1 and 2 of the valve will assume tially parallel with the face-piece of the mask instead of projecting outwardly therefrom as do the ordinary flutter valves, thus oing away with the interference of movement of the wearer of the mask.

with m valve, it will be substantially parallel to the face-piece of. the mask.

- If solid particles become lodged between the walls of the ordinary flutter valve, it would fail to but with mechanisms would afford the proper protec tion against inhaling air therethrough.

The neck 5 of the valve is thickened atthe This rigidity ma be further improved u on y having the tube 13, of the metal or ot er fitting of the mask over which the neck of the valve is placed, project beyond the .wall

1, as shown in Fig. 7, so as to form with the mechanism.

wall 2 a valve-closin The valve shown in Fig. Sis provided a position substan- Also, ifa

.' vided with a with only one slit or opening 14 instead of the two slits shown in the other constructions.

The present invention is not limited to the specific details set forth in the foregoing examples which should be construed as illustrative and not by way of impose as are indicated in the appended c aims.

I claim as my invention:

1. A flutter valve comprising a pair of walls, one of said Walls being provided with a neck at an angle thereto and the base of said neck being adapted to engage with the other wall to form a valve-closing mecha- IllSm.

age with the other wall to osing mechanism.

3. A flutter valve of flexible material comprising a pair of walls, one of said walls being provided with a neck integral therewith and at substantially a right angle thereto and the base of said neck bein adapted to engage with the other wall to form a valve-closing mechanism. 2

4. A flutter valve of flexible material comprising a air of walls, one of said Walls being provi ed with a cylindrical neck integral therewith and at an angle thereto and the neck being adapted to engage with the other-wall to form a valve-closing mechanism.

5. In a flutter valve, a flattened bag slitted along the ed near an end thereof, one wall of said bag eing provided with a neck at an angle thereto and the base of said neck being adapted to en age with the other wall to form a valve-c osin mechanism.

6. In a flutter valve, a attened bag of flexible material slitted along the edge near an end thereof, one wall of said bag being provided with a neck at an angle thereto and the base of said neck being adapted to engage with the other wall to form a valveclosing mechanism.

7. In a flutter valve, a flattened bag of flexible material slitted along the edges near an end thereof and formin a valve-closing mechanism, one wall of said bag being proneck at an angle thereto and the base of said neck being adapted to engage with the other wall to form an auxiliary valve-closing mechanism.

8. In a flutter valve, a flattened bag of flexible material slitted along the edges near an end thereof and forming a valve-closing mechanism, one wall of sai bag being provided with a neck integral therewith and at substantiall a right angle thereto and the base of sai neck being adapted to engage with the other Wall to form an auxiliary valve-closing mechanism.

'9. In a flutter valve, a flattened bag of flexible material slitted along the edges near an end thereof and forming a valve-closing mechanism, one wall of said bag being provided with a cylindrical neck integral therewith and at an angle thereto and the base of said neck being adapted to engage with the other wall to form an auxiliary valve-closing mechanism.

10. In a flutter valve, a flattened bag of pliable rubber slitted along the edge near an end thereof, one wall of said bag being provided with a neck at an angle thereto and the base of said neck being adapted to engage with the other wall to form a valveclosing mechanism.

11. In a flutter valve, a flattened bag of pliable rubber slitted along the edges near an end thereof and forming a Valve-closing mechanism, one wall of said bag being provided with a neck at an angle thereto and the base of said neck being adapted to engage with the other wall to form an auxiliary valve-closing mechanism.

12. In a flutter valve, a flattened bag of pliable rubber slitted along the edges near an end thereof and forming a valve-closing mechansm, one wall of said bag being provided with a neck integral therewith and substantially perpendicular thereto and the base of said neck being adapted to engage with the other wall to form an auxiliary valve-closing mechanism.

13. In a flutter valve, a flattened bag of pliable rubber slitted along the edges near an end thereof and forming a valve-closing mechanism, one wall of said bag being providedwith a cylindrical neck integral therewith and the base of said neck being adapted to engage with the other wall to form an auxiliary valve-closing mechanism.

14:. A flutter valve comprising a pair of walls, one of said walls being provided with a neck at an angle thereto and means for adding rigidity to said neck.

15, A flutter valve comprising a pair of walls, one of said walls being provided with a neck at an angle thereto and means for adding rigidity to said neck, said means engaging the other wall to form a valve-closing mechanism.

16. A flutter valve comprising a pair of walls of pliable rubber one of said walls being provided with a neck at an angle thereto and means for adding rigidity to said neck, said means engaging the other wall to form an auxiliary valve-closing mechanism.

17. A flutter valve comprising a pair of walls, one of said walls being provided with a neck at an angle thereto and stiffening means at the base of the neck for adding rigidity thereto.

18. A flutter valve comprising a pair of walls, one of said walls being provided with a neck at an angle thereto and the base of said neck being adapted to engage with the other wall to form a valve-closing mechanism, and stiifening means at the base of the neck for adding rigidit thereto.

19. In a flutter va ve, a flattened bag slitted along the edgenear an end thereof, one wall of said bag being provided with a neck at an angle thereto and the base of said neck being adapted to engage with the other wall to form a valve-closing mechanism,

and stifiening means at the base of the neck for adding rigidity thereto.

20. In a flutter Valve, a flattened bag of flexible material slitted along the edge near an end thereof, one wall of said bag being provided with a neck at an angle thereto and means for adding rigidity to said neck.

21. In a flutter valve, a flattened bag of flexible material slitted along the edge near an end thereof, one wall of said bag being provided with a neck at an angle thereto and means for adding rigidity to said neck, said means engaging the other wall to form an auxiliary valve-closing mechanism.

22. In a flutter valve, a flattened bag of pliable rubber slitted along the ed e near an end thereof, one wall of said bag eing provided with a neck at an angle thereto and the base of said neck being adapted to engage with the other wall to form a valveclosing mechanism and stiffening means at the base of the neck for addingv rigidity 

